Example usage for org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair AllocationFileLoaderService ALLOC_RELOAD_WAIT_MS

Introduction

In this page you can find the example usage for org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair AllocationFileLoaderService ALLOC_RELOAD_WAIT_MS.

Prototype

long ALLOC_RELOAD_WAIT_MS

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Document

Time to wait after the allocation has been modified before reloading it (this is done to prevent loading a file that hasn't been fully written).

Usage

From source file:com.cloudera.impala.util.TestRequestPoolService.java

License:Apache License

@Test
public void testUpdatingConfigs() throws Exception {
    // Tests updating the config files and then checking the pool resolution, ACLs, and
    // pool limit configs. This tests all three together rather than separating into
    // separate test cases because we updateConfigFiles() will end up waiting around 7
    // seconds, so this helps cut down on the total test execution time.
    // A one second pause is necessary to ensure the file timestamps are unique if the
    // test gets here within one second.
    createPoolService(ALLOCATION_FILE, LLAMA_CONFIG_FILE);
    Thread.sleep(1000L);//from  w w w .  j a v  a  2  s.  c  o  m
    Files.copy(getClasspathFile(ALLOCATION_FILE_MODIFIED), allocationConfFile_);
    Files.copy(getClasspathFile(LLAMA_CONFIG_FILE_MODIFIED), llamaConfFile_);
    // Wait at least 1 second more than the time it will take for the
    // AllocationFileLoaderService to update the file. The FileWatchService does not
    // have that additional wait time, so it will be updated within 'CHECK_INTERVAL_MS'
    Thread.sleep(1000L + CHECK_INTERVAL_MS + AllocationFileLoaderService.ALLOC_RELOAD_WAIT_MS);
    checkModifiedConfigResults();
}

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